Thursday, August 9, 2018

Azure Container Instance (8): Deploy IIS nanoserver Image


When customers try to deploy their customized image with ACI, they may meet problems. This article provides a workaround for this problem.

Problem

If you customize an image with the following commands:

docker pull microsoft/iis:nanoserver
docker run --name 2048 -d -v C:\2048:C:\data microsoft/iis:nanoserver
docker exec -i 2048 powershell
#inside the container
mkdir C:\sitecontent
copy-item C:\data\* C:\sitecontent -Recurse
Import-Module IIS*
stop-iissite -name "Default First Site" -confirm:$false
remove-iissite -name "Default First Site" -confirm:$false
new-iissite -name demosite -physicalpath C:\sitecontent -bindinginformation "*:80:"
#exit out of the container
docker stop 2048
docker commit 2048 2048_v1
docker login
docker tag 2048_v1 <dockertag>:2048_v1
docker push <dockertag>:2048_v1

and they deploy the image with ACI, you may see the following error from log:

"Service 'w3svc' has been stopped
APPCMD failed with error code 183
Failed to update IIS configuration"

Workaround

It seems that the IIS docker image has a bug similar to https://github.com/Microsoft/iis-docker/issues/42.

We can work around this problem before the bug is fixed. If we build the docker image from Docker file, then we can successfully deploy it with ACI.

1.       Define a Dockerfile, as shown below, supposing your site content files are in the folder ./source of the path which contains the Dockerfile:

FROM microsoft/iis:nanoserver
RUN powershell -NoProfile -Command Remove-Item -Recurse C:\inetpub\wwwroot\*
WORKDIR /inetpub/wwwroot
COPY source/ .

2.       Build Docker image with command “docker build -t <your-image-name> .” and push it into Docker hub with command “docker push <your-image-name> .

3.       Deploy the image into ACI with CLI command: az container create --resource-group <your-resource-group> --name <your-container-group> --image <your-image-name> --os-type Windows --port 80 --ip-address "Public"

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Azure Container Instance (8): Deploy IIS nanoserver Image

When customers try to deploy their customized image with ACI, they may meet problems. This article provides a workaround for this problem...